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參數資料
| 型號： | MB90M407PF |
| 廠商： | FUJITSU LTD |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 16-Bit Original Microcontroller |
| 中文描述： | 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP100 |
| 封裝： | 0.65 MM PITCH, PLASTIC, QFP-100 |
| 文件頁數： | 11/64頁 |
| 文件大?。?/td> | 310K |
| 代理商： | MB90M407PF |
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MB90M405 Series
11
■
HANDLING DEVICES
This section contains important information on handling the device, regarding the following :
Do not exceed maximum rated voltage (to prevent latch-up)
Supply voltage stability
Power-on precautions
Treatment of unused pins
Treatment of A/D converter power supply pin
Notes on using external clock
Power supply pin
Sequence for applying power analog input of A/D converter
Output of high-voltage output pin (circuit types C & D)
Do not exceed maximum rated voltage (to prevent latch-up)
With a CMOS IC, if voltage above V
CC
or below V
SS
is applied to an output or input pin other than a medium/
high voltage resistance pin, or if voltage between V
CC
and V
SS
, but exceeding the rated voltage, is applied, a
latch-up state could be generated. In the event of a latch-up, the power current will increase drastically, possibly
destroying the chip due to overheating. For this reason, make sure not to exceed the maximum rating.
When applying or shutting off analog power, make sure that the analog power (AV
CC
) and analog input voltage
do not exceed the digital power voltage (V
CC
) .
Supply voltage stability
Even within the scope of operational protection for V
CC
power voltage, a sudden increase in power voltage could
cause the unit to malfunction. For this reason, please stabilize the V
CC
power voltage.
The standard for stabilizing voltage is a V
CC
ripple fluctuation (peak to peak value) of no more than 10
%
of
standard V
CC
power voltage at commercial power frequencies (50 Hz to 60 Hz) , and an excess fluctuation rate
of no more than 0.1 V/ms for instantaneous changes when switching power.
Power-on precautions
When turning on the power, ensure that the power voltage (V
CC
) power-up time is at least 50
μ
s (0.2 V to
2.7 V) , in order to keep the built-in step-down circuit from malfunctioning.
Treatment of unused pins
Leaving unused input pins free could cause permanent damage due to malfunctions and latch-ups. For this
reason, set unused input pins to pull-up or pull-down via resistance of 2 k
or more. Additionally, if there are
unused I/O pins, either set them to output and leave them free, or set them to input and treat them as input pins.
Notes on using external clock
When using an external clock, please drive pin X1 only, and free pin X1. An example of using an external clock
is shown in the figure below:
X0
X1
OPEN
MB90M405 series
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